package com.example.demo.util;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileOutputStream;
import java.io.InputStream;

/**
 * Created by Administrator on 2018/4/16.
 */
public class  FileUtils {

    public static boolean copyFile(String oldPath, String newPath){
        try {
            int bytesum = 0;
            int byteread = 0;
            File oldfile = new File(oldPath);
            if (oldfile.exists()) { //文件存在时
                InputStream inStream = new FileInputStream(oldPath); //读入原文件
                FileOutputStream fs = new FileOutputStream(newPath);
                byte[] buffer = new byte[1024];
                while ((byteread = inStream.read(buffer)) != -1) {
                    bytesum += byteread; //字节数 文件大小
                    System.out.println(bytesum);
                    fs.write(buffer, 0, byteread);
                }
                inStream.close();
            }
        } catch (Exception e) {
            System.out.println("复制单个文件操作出错");
            e.printStackTrace();
            return false;

        }


        return  true;
    }
}
